Silicon Valley and legacy payment companies are locked in a battle to control the store register

BIIMobile solutions may be cannibalizing sales of traditional payment hardware

Silicon Valley is gunning for the market controlled by traditional payment terminals, the clunky countertop systems still in use at retailers everywhere.

Startups and tech companies like Amazon and PayPal are creating a new crop of solutions, including mobile payment hardware, credit card readers that attach to smartphones and tablets, as well as merchant-side payment apps.